The EuroTacle Z-Viber has a unique internal tungsten weight system, that causes the bait to sink as fast as your average tungsten ice jig. This tiny jig can be used for vertical jigging, casting in open water, and while ice fishing. When jigged, the ultra light Z-Viber will provide tight vibrations going up and then into quick fall when going down. When retrieved it will produce a wide and unique wobbling action. The vibrations activate the tungsten bb's that create a very subtle rattling noise.